基于熵指數(shù)法的黃河龍羊峽一積石峽山洪致災(zāi)因子分析

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關(guān)鍵詞：山洪災(zāi)害；致災(zāi)因子；熵指數(shù)法；權(quán)重；黃河龍羊峽一積石峽區(qū)間；青海省中圖分類號(hào)：TV62;TV882.1 文獻(xiàn)標(biāo)志碼：A doi：10.3969/j.issn.1000-1379.2025.07.002引用格式;，隆坤，郭要輝，等.基于熵指數(shù)法的黃河龍羊峽—積石峽山洪致災(zāi)因子分析[J].人民黃河，2025，47（7）：8-12，19.

Analysis of Flash Flood Causing Factors in the Longyangxia-Jishixia Section of the Yellow River Based on Entropy Index Method

HU Shaowei1，2，，LONG Kun2 ，GUO Yaohui2， XU Yaoqun1， ZHANG Zhiwei2 （1.School of Water Conservancy and Transportation， Zhengzhou University， Zhengzhou 45Ooo1， China; 2.School of Civil Engineering，Chongqing University，Chongqing 40oO45，China）

Abstract：Duetoisomplexterrandspecalcmate，QnghaiProvinceispronetosudnaddsructiveountainfloosoderto provideabasisforthemonitoingandpreventionofountaifloodsintheegion，takingtheLongangia-Jishixiasctioofteprea cheoftheYelloRiverinQingaiProvince，heremoutainfooddisasterswereelativelysevere，astesudyraOinfuencincto of moutaiflooddisasterswereinillyseletedBasedonthataof11istorcalflooddisasterpointsinthestudyareafrom958to 2000，fourfactsioelaoseeadoghearselotesTmangsiienctoai fied.GISspatialaalysistecholowasusedtobtainthasifeddataofthesixifuecingfactors.Thentropdexmetodwasadot edtocalculateteweightsofachfactorandidentiftheaindisaster-causingfactos.Theeseachsultsshothatelevatioalpre cipitation，terainroughs，Iistacefroheiverouse，andaspectaeesastercausingfactosfoutainflosthe studyarea（withthe weightsof0.5716，0.1448，0.1079，0.0948，0.0719and0.0090respectively），amongwhich，elevationaual precipitationndinousaretindisastecausinctorsAoigtofaiofteainisasteaingfctor， （2 91.30% of the historical mountain flood disasters in the study area occur in the areas with an elevation lower than 3 091 m， 99.14% occur in the areas with an annual precipitation greater than 317 mm，and 98.26% occur in the areas with a terrain roughness less than 1.10.

Keywords：mountainflooddisaster；disaster-causingfactor;EntropyIndexMethod；weight;ongangxia-JishiiasctionofelowRiver; Qinghai Province

0 引言

青海省是黃河上游生態(tài)屏障，但因地形復(fù)雜、氣候特殊而山洪災(zāi)害突發(fā)性強(qiáng)、破壞力大。（剩余6158字）